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$g(x) = 2x -\int_{1}^{x} t^2 ( 4 - 7(t - 1) + (t-1)^2 )dt$
$g(x) = 2x -\int_{1}^{x} t^2 ( 4 - 7(t - 1) + (t-1)^2 )dt$
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